Size does matter? Apple's strategy for ever-thinner devices. From the article:
"Characteristic of thinner devices is how they naturally reduce interaction choice for the user — with fewer physical entry points into these devices. They are shiny shells encouraging greater reliance on the walled garden ecosystem that created them. Physical ports and slots are pared back to a bare minimum. Storage is probably not user-expansible. Batteries aren’t replaceable.
All of which limits what users can do vis-a-vis the iOS ecosystem, and makes their behaviour more predictable and controllable. That in turn allows Apple to construct a more accessible environment, with fewer available choices supporting a simpler, more mainstream-friendly interface.
If the user can’t do things like expand storage themselves, or buy a replacement battery, they can be more easily nudged by Apple to pay for cloud storage or encouraged to upgrade to a new i-Device. It’s all about funnelling users along the Cupertino-controlled pipe.
These constraints help with ecosystem lock-in too. The more invested the user becomes in the iOS ecosystem and Apple’s iCloud, the more locked in to its hardware they are — with the cumulative build up of associated digital content working to dissuade them from switching to another platform."
So now you know. Platform and vendor independence is going to be getting a lot more difficult to achieve. However, it's a very clever strategy!